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Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2021
Accounting Policies [Abstract]  
Summary of Cash, Cash Equivalents and Restricted Cash The following is a summary of cash, cash equivalents and restricted cash as of September 30, 2021 and December 31, 2020 (in thousands):
September 30, 2021December 31, 2020
Cash and cash equivalents$508,177 $366,119 
Restricted cash, short-term1,754 — 
Restricted cash, long-term3,928 — 
Total cash, cash equivalents and restricted cash$513,859 $366,119 
Useful Lives of Property, Plant and Equipment
Property, plant and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over estimated useful lives generally as follows:
Buildings and improvements
10-40 years
Machinery and equipment
5-10 years
Furniture, computer hardware and equipment
3-5 years
Internal-use software
3-5 years
Production molds
2-5 years